Schematic Reference: Head Up Display Schematics

Did you review the operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Instrument Panel, Gages and Console

1. Turn the ignition ON, with the engine OFF.
2. Adjust the head up display (HUD) switch to maximum intensity and then to minimum intensity.

Does the HUD dim properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Turn the ignition OFF.
2. Disconnect the HUD.
3. Turn the ignition ON, with the engine OFF.
4. Connect a test lamp between the HUD illuminated display signal circuit and ground. Refer to Circuit Testing in Wiring Systems.
5. Adjust the HUD dimmer switch to maximum intensity and then to minimum intensity.

Does the test lamp go from maximum intensity to minimum intensity?

Go to Step 6

Go to Step 4

Test the HUD illuminated display signal circuit for a short to battery voltage or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 5

Inspect for poor connections at the HUD switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 7

Inspect for poor connections at the HUD module. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

Replace the HUD switch. Refer to Head Up Display Switch Replacement .

Did you complete the replacement?

Go to Step 9

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Replace the HUD. Refer to Head Up Display Module Replacement .

Did you complete the replacement?

Go to Step 9

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2